[특허]Adaptive traction control system

[미국특허] Adaptive traction control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60L-015/00 B60L-015/20
출원번호	UP-0160116 (2005-06-09)
등록번호	US-7529611 (2009-07-01)
발명자 / 주소	Tseng, Hongtei Eric Fodor, Michael Hrovat, Davor
출원인 / 주소	Ford Global Technologies, LLC
대리인 / 주소	O'Brien Jones, PLLC
인용정보	피인용 횟수 : 1 인용 특허 : 30

초록 ▼

A method of controlling a traction control system (30) includes continuously adapting a steady state driven wheel speed to reference wheel speed ratio, so that said traction control system can avoid unnecessary actuations (e.g., demanding torque reduction). The continuous adaptation methodology provides traction control robustness to vehicles equipped with a spare tire, or a different final drive such as in the use of aftermarket parts. The method includes a dual rate adaptation that allows both fast adaptation and fine tuning capabilities of the ratio. The method includes comparing the instant driven wheel speed to reference wheel speed ratio to the filtered driven wheel speed to reference wheel speed ratio, to obtain a ratio difference. When the difference is above a threshold, the first filter constant is selected and the first constant is applied to an adaptation filter, resulting in a first filtered and adapted ratio. The traction control system is controlled with the adapted ratio. When the difference is below the threshold, the second filter constant is selected and the selected constant is applied to the adaptation filter, resulting in the second filtered and adapted ratio. The traction control system is controlled with the adapted ratio.

대표청구항 ▼

What is claimed is: 1. A method for monitoring and accommodating changes in tire radius for a traction control system of a vehicle, the method comprising: comparing a ratio of a reference wheel speed to a speed of driven wheels to a predetermined ratio; and if a difference between the ratio of the reference wheel speed to the speed of the driven wheels and the predetermined ratio is above a threshold, applying a filter constant to the ratio of the reference wheel speed to the speed of the driven wheels to adapt the ratio of the reference wheel speed to the speed of the driven wheels to a reference wheel speed ratio; and inputting the reference wheel speed ratio to the traction control system. 2. The method of claim 1, wherein the reference wheel speed is a speed of undriven wheels of the vehicle. 3. The method of claim 2, wherein the vehicle has two driven wheels. 4. The method of claim 1, wherein the reference wheel speed is a speed of undriven wheels of the vehicle. 5. The method of claim 4, wherein the vehicle has four driven wheels. 6. The method of claim 2, wherein the ratio of the reference wheel speed to the speed of the driven wheels comprises a ratio of an average undriven wheel speed to an average driven wheel speed. 7. The method of claim 1, further comprising applying a dual rate adaptation filter. 8. The method of claim 1 further comprising, when the speed of the driven wheels is larger than a pre-determined function of the reference wheel speed continuously during traction control activation for a pre-determined time period, comparing the speed of the driven wheels to a factored target wheel speed; and if the speed of the driven wheels is greater than the factored target wheel speed for a predetermined amount of time, instantly changing the ratio of the reference wheel speed to the speed of the driven wheels to the reference wheel speed ratio during traction control activation.

이 특허에 인용된 특허 (30) 인용/피인용 타임라인 분석

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Brown, Todd Allen, Braking and controllability control method and system for a vehicle with regenerative braking.
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Latarnik Michael (Friedrichsdorf DEX) Kolbe Alexander (Gross Zimmern DEX) Honus Klaus (Frankfurt am Main DEX), Circuit configuration and method for controlling a traction slip control system with brake and/or engine management.
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Giers Bernhard (Rossdorf DEX), Circuit configuration for brake systems with anti-lock control and/or traction slip control.
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Mori Ryoji (Wako JPX) Kiryu Hironobu (Wako JPX) Shiraishi Shuji (Wako JPX), Correcting the wheel speed of a wheel having a different diameter than other wheels.
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Hirohisa Tanaka JP; Hidetaka Koga JP, Device for changing the speeds of the front and rear wheels in a four-wheel-drive vehicle.
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Itoh Hiroshi (Toyota JPX) Takahashi Tokuyuki (Toyota JPX), Device for controlling vehicle four wheel drive front/rear coupling device by learning effective front/rear vehicle whee.
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Sugo,Yasuhiko; Hara,Jiro, Driving force control apparatus for four-wheel drive vehicle.
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Masuda Katsuhiko,JPX ; Aoki Jun,JPX ; Hashizume Isamu,JPX, Driving-force control system for a vehicle.
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Brooks Loran D. (Birmingham MI) Kidston Kevin S. (New Hudson MI), Electric vehicle with traction control.
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Holt, Bradford J.; Jensen, Jeffrey E.; Marathe, Sameer; Marks, Scott A., Electronic traction control system.
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Zimmer Richard (Fellbach DEX) Mller Armin (Backnang DEX) Freitag Rainer (Nrtingen DEX), Method and apparatus for adapting motor vehicle drive slip threshold values for a drive slip and/or a brake slip control.
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Johannes Schmitt DE; Klaus-Peter Mattern DE; Rolf Gawlik DE, Method and device for adjusting the braking and/or drive effects on wheel of motor vehicles.
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Stuible Ewald (Am Blaichberg 11 71735 Eberdingen DEX) Berger Walter (Rosenfeld 110 74391 Erligheim DEX) Pfau Martin (Weissdornweg 3 71287 Weissach DEX) Kornhaas Robert (Bromberger Weg 6 71701 Schwieb, Method and device for monitoring rotational speed sensors of vehicles for faults using a slip coefficient weighted by ti.
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Walenty Allen John (Macomb MI) Leppek Kevin Gerard (Rochester Hills MI) Kade Alexander (Grosse Pointe Woods MI), Method for proportionally controlling the brakes of a vehicle based on front and rear wheel speeds.
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Watanabe Takashi (Kariya JPX) Fujimoto Shusaku (Kariya JPX) Sakai Kazunori (Aichi JPX), Motor vehicle running control apparatus.
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Burkhard Dieter,DEX ; Dornseiff Manfred,DEX ; Schmidt Robert,DEX ; Schwartz Jean-Claude,DEX, Process for determining wheel speed signal correction factors.
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Iwata Toru (Kanagawa JPX) Yasuda Sota (Kanagawa JPX), System for detecting hydroplaning of vehicle.
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Okawa Yasushi (Osaka JPX) Isshiki Isao (Osaka JPX), Tire pressure drop detecting device and method.
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Imai, Fukami; Inagaki, Tatsuya; Wakao, Hisaaki; Kato, Kiyoshige; Ito, Satomi, Torque distribution control device for four-wheel drive vehicle.
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Oshiro Hiroshi,JPX ; Toyoda Keiji,JPX ; Takemasa Noriyuki,JPX, Vehicle control method using short-term and long-term correction coefficients to determine turn status.
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Iwata Toru,JPX, Vehicle drive force control device.
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Beyer, Keith Wayne; Krueger, Eric Edward; Marchese, Vincent E; Brown, Todd David; Lustre, Alan Rae, Vehicle engine torque control with engine drag control mode.
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Ikeda Toru,JPX ; Mori Ryoji,JPX ; Honjyo Fumiaki,JPX ; Kiryu Hironobu,JPX ; Shiraishi Shuji,JPX, Wheel speed correcting system.
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Takata Koji (Itami JPX), Wheel speed correction device which compensates for changes in tire diameter and during vehicle turns.
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Ogawa,Atsushi, Wheel-state obtaining apparatus, and vehicle-state obtaining apparatus.
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Haruyama, Nobuyuki; Tezuka, Takabumi; Yoshida, Masayuki, Travelling control apparatus of compaction vehicle.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Adaptive traction control system 원문보기

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[미국특허] Adaptive traction control system 원문보기

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이 특허를 인용한 특허 (1) 인용/피인용 타임라인 분석

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